Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

Table of figures

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[221] Fig. 2Saturnus. Tellus. Luna. A C D R S K M G H T V N L Q Y P E F B
[222] Pag. 712.TAB. LV.Fig. 1.Sol.Sat.Jup.MarsTellusVenusMerc.
[223] Fig. 2.D A C B E
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[234] pag. 776.Tab. lvi.Fig. 1.B H V C K E T D F X P Z Q I Y O R S A
[235] Fig. 2.D S Y A d I M N d X D O Z B M E C R
[236] Fig. 3.Y T V A M N Z B E C R
[237] Fig. 4.L A M F H N G E D K B C
[238] Fig. 5.h A P O R Q G F D Z H E K L C B M
[239] Fig. 6.D A P r N O e Q K I V F H C L B M
[240] Fig. 7.C B C D A A
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          <pb o="586" file="0322" n="339" rhead="CHRIST. HUGENII"/>
          <p>
            <s xml:id="echoid-s6807" xml:space="preserve">At cum nondum gr. </s>
            <s xml:id="echoid-s6808" xml:space="preserve">8 aut 9, plus verò quam ſenis, ec-
              <lb/>
            centricus locus Saturni à 20{1/2} gr. </s>
            <s xml:id="echoid-s6809" xml:space="preserve">♍ aut ♓ aberit, videtur
              <lb/>
            etiam apparens locus expendendus eſſe, nempe circa quadra-
              <lb/>
            tum quem vocant Saturni cum Sole aſpectum. </s>
            <s xml:id="echoid-s6810" xml:space="preserve">Fieri enim
              <lb/>
            poterit ut non ultra gradus unius ſemiſſem locus apparens
              <lb/>
            ab æquinoctii loco remotus ſit, ideoque viſus noſter tantum
              <lb/>
            12′ ſuper annuli ſuperficiem exurgat; </s>
            <s xml:id="echoid-s6811" xml:space="preserve">quæ cum à Sole ſimul
              <lb/>
            debiliter illuminetur, vix puto ſe videndam præbebit. </s>
            <s xml:id="echoid-s6812" xml:space="preserve">Quum
              <lb/>
            autem duo contingant quadrati aſpectus ſingulis Saturni ful-
              <lb/>
            ſionibus, priori eorum ita demum illud quod diximus per-
              <lb/>
            pendere opus erit, ſi locus planetæ ex Sole præcedat gr.
              <lb/>
            </s>
            <s xml:id="echoid-s6813" xml:space="preserve">@0{1/2} ♍ aut ♓, poſteriori verò non niſi ſequatur. </s>
            <s xml:id="echoid-s6814" xml:space="preserve">Nam ſi ſe-
              <lb/>
            cus fuerit jam certo brachiis auctus cernetur.</s>
            <s xml:id="echoid-s6815" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6816" xml:space="preserve">Et ſic quidem quod maximè perplexum in toto hoc nego-
              <lb/>
            tio inerat, nulla diſſimulata difficultate, pertractavimus. </s>
            <s xml:id="echoid-s6817" xml:space="preserve">Il-
              <lb/>
            lud enim inquirere voluimus an certis locis rotunda phaſis
              <lb/>
            alligari poſſet, ita ut omnibus huc uſque obſervatis fieret
              <lb/>
            ſatis. </s>
            <s xml:id="echoid-s6818" xml:space="preserve">Quod & </s>
            <s xml:id="echoid-s6819" xml:space="preserve">præſtitimus tandem, etſi arctis adeo limiti-
              <lb/>
            bus circumſcripti, ut ne minimum quidem ultra citrave ab
              <lb/>
            iis diſcedere ſalvis apparentiis licuerit. </s>
            <s xml:id="echoid-s6820" xml:space="preserve">Simul verò hoc ope-
              <lb/>
            ræ pretium fecimus, quod de futuris Saturni phaſibus haud
              <lb/>
            dubia prænuntiare in poſterum licebit. </s>
            <s xml:id="echoid-s6821" xml:space="preserve">Etenim ſi modo ta-
              <lb/>
            bularum Aſtronomicarum ope inveniatur, quo tempore Sa-
              <lb/>
            turni locus ex ſole ſive eccentricus, cadat in gr. </s>
            <s xml:id="echoid-s6822" xml:space="preserve">20, 30′ ♍
              <lb/>
            vel ♓; </s>
            <s xml:id="echoid-s6823" xml:space="preserve">ſenis menſibus qui id tempus præcedunt totidemque
              <lb/>
            ſequentibus brachia nulla percipi poſſe maniſeſtum erit; </s>
            <s xml:id="echoid-s6824" xml:space="preserve">quo-
              <lb/>
            niam ſcilicet in menſes ſingulos gradu uno Planetæ locus ex
              <lb/>
            Sole promovetur. </s>
            <s xml:id="echoid-s6825" xml:space="preserve">Præterquam quod aliquando uno etiam
              <lb/>
            atque altero menſe citius rotunda phaſis exiſtet, aliquando
              <lb/>
            tanto diutius videri perſeverabit; </s>
            <s xml:id="echoid-s6826" xml:space="preserve">ſi nempe quadrante cæli
              <lb/>
            per id tempus Saturnum à Sole diſtare contingat, locuſque
              <lb/>
            Planetæ eccentricus, ea qua diximus lege, præcedat vel ſe-
              <lb/>
            quatur ♍ aut ♓ gr. </s>
            <s xml:id="echoid-s6827" xml:space="preserve">20. </s>
            <s xml:id="echoid-s6828" xml:space="preserve">30′.</s>
            <s xml:id="echoid-s6829" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6830" xml:space="preserve">Secundùm hæc igitur, quoniam in gr. </s>
            <s xml:id="echoid-s6831" xml:space="preserve">20, 30′ ♓ incidit
              <lb/>
            locus eccentricus die 12. </s>
            <s xml:id="echoid-s6832" xml:space="preserve">Jan. </s>
            <s xml:id="echoid-s6833" xml:space="preserve">1672″, exiſtimo anno 1671 & </s>
            <s xml:id="echoid-s6834" xml:space="preserve">
              <lb/>
            1672 Saturnum brachiis cariturum; </s>
            <s xml:id="echoid-s6835" xml:space="preserve">non toto utriuſque </s>
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